"Lock Screen(Boot)" can lock your device easily. so you can save your power key from wearing down. It will start automatic when the system boot. #If you don't want it start automatic#,please search another app of mine,named "Lock Screen". URL: https://market.android.com/details?id=com.kuifangxu.lockdown

How To use it:1.A notification will show in the status bar when the system have booted.Pull down the status bar,tap the notification.Press "Settings" button,It will show a Dialog.Choice "Activate" it.YOU need NOT Setting it again.2.When you want lock your device,Pull down the status bar,tap the Notification to lock your screen.

Features :?Lock device function on notification bar.(Same effect as pressing the power button)?Not a widget so it does not run as service in the background?Auto-kill itself after locking to save your Battery & Memory?Tiny in size

Notes:======@@Compatibility Issues@@------------------------------------The developer has tried to test the app on Android (2.2 & 2.3). However, the dev cannot guarantee that it could run / uninstall on all devices [coz I don't have all the devices].

Now I hnow it doesnot work on Android3.1+. If you want use it,please download other app "Lock Screen".(https://market.android.com/details?id=com.kuifangxu.lockdown )

Please let me know your device name if the latest version could/couldn't work/uninstall on your device.(I would then update the above list for other users' reference. Thanks.)